A call admission policy is provided that has a dynamic operating point setting desired load levels for data calls and for voice calls. A request for a first call admission may be granted even though the desired load levels are exceeded if there is sufficient power to admit at least one additional second call, wherein the first call is selected form the group of data or voice calls and the second call is the remaining type of call within the group.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A dynamic voice call admission method for CDMA systems, comprising: for a channel selected from the group of forward and reverse radio channels: calculating a current channel power level for data calls and a current channel power level for voice calls; receiving a request to admit a voice call, wherein a channel power level for voice calls upon admission will exceed a desired total voice power level if the call admission request is granted; and admitting the voice call if the sum of the channel power level for voice calls upon admission and the current channel power level for data calls is less than a power maximum and if, upon admission, a sufficient reserved power is available to admit at least one additional data call.
2. The method of claim 1 , further comprising the steps of: providing a power reference based upon a voice call with certain operating characteristics, wherein calls having identical operating characteristics are denoted a voice equivalent; estimating a total current transmitting power of the radio channel; and estimating, for the radio channel, the total voice equivalent for the data calls and the voice calls, wherein the calculating of the current channel power levels for the data calls and the voice calls and the channel power level for voice calls upon admission are based upon the total current transmitting power of the radio channel and the total voice equivalents.
3. The method of claim 2 , wherein the radio channel is the forward radio channel.
4. The method of claim 3 , wherein the calculation of the total voice equivalents for the data calls is based upon only data calls that are currently transmitting bursts in the forward radio channel.
5. A dynamic voice call admission method for CDMA systems, comprising: for a channel selected from the group of forward and reverse radio channels: calculating a current channel power level for voice calls; receiving a request to admit a data call, wherein a reserved channel power level for data calls will exceed a desired reserved channel power if the call admission request is granted; and admitting the data call if the sum of the reserved channel power level for the data calls upon admission and the current channel power level for voice calls is less than a power maximum and if, upon admission, a sufficient power is available to admit at least one additional voice call.
6. The method of claim 5 , further comprising the steps of: providing a power reference based upon a voice call with certain operating characteristics, wherein calls having identical operating characteristics are denoted a voice equivalent; estimating a total current transmitting power of the radio channel; and estimating, for the radio channel, the total voice equivalent for the data calls upon admission and the voice calls, wherein the calculating of the current channel power levels for the voice calls and the reserved channel power level for the data calls upon admission are based upon the total current transmitting power of the radio channel and the total voice equivalents.
7. The method of claim 6 , wherein a voice equivalent of the reserved channel power for the data call upon admission is less than the total voice equivalent for the data calls upon admission.
8. The method of claim 7 , wherein the channel is the forward radio channel.
9. A call admission monitor in a wireless communication network, comprising: a voice power estimator configured to estimate a total voice power level for all voice communications being serviced on a communication channel; and a data power estimator configured to estimate a total data power level for all data communications being serviced on the communication channel; the call admission monitor configured to admit additional voice or data communications based on a configurable dynamic operating point for a maximum channel power.
10. The call admission monitor of claim 9 , wherein the maximum channel power is a maximum power level for the sum of the total voice power level and the total data power level for the communication channel.
11. The call admission monitor of claim 9 , wherein the total data power level is converted to an equivalent total voice power level, and wherein the maximum channel power is a maximum power level for the sum of the total voice power level and the equivalent total voice power level for the communication channel.
12. The call admission monitor of claim 11 , wherein the equivalent total voice power level is based on only those data communications that are currently transmitting.
13. The call admission monitor of claim 9 , configured to admit an additional voice communication provided the maximum channel power is not exceeded and provided a sufficient reserved power is available to admit at least one additional data communication.
14. The call admission monitor of claim 9 , configured to admit an additional data communication provided the maximum channel power is not exceeded and provided a sufficient reserve power is available to admit at least one additional voice communication.
15. The call admission monitor of claim 9 , further comprising a scheduler configured to schedule channel resources for burst requests originating from data communications that are transitioning from dormant to active.
16. The call admission monitor of claim 15 , wherein the scheduler is further configured to schedule the data rate for data communications.
17. The call admission monitor of claim 15 , wherein the scheduler is further configured to assign channel resources to a data communication if sufficient channel resources are available, and to periodically check the channel resources until there are sufficient channel resources for the data communication.
18. The call admission monitor of claim 15 , wherein the scheduler is further configured to assign channel resources to a data communication if sufficient channel resources are available, and wherein the scheduler is further configured to queue the data communications when there are insufficient channel resources and to assign the resources, as they become available, to the queued data communications.
19. A wireless communications system, comprising: a plurality of mobile devices configured for data and voice communication; and at least one base station that includes a call admission monitor, the call admission monitor comprising a voice power estimator configured to estimate a total voice power level for all voice communications being serviced on a communications channel; and a data power estimator configured to estimate a total data power level for all data communications being serviced on the communications channel; the call admission monitor configured to admit additional voice or data communications based on a configurable dynamic operating point for a maximum channel power.
20. The wireless communication system of claim 19 , the call admission monitor configured to admit an additional voice communication provided the maximum channel power is not exceeded and provided a sufficient reserved power is available to admit at least one additional data communication.
21. The wireless communication system of claim 19 , the call admission monitor configured to admit an additional data communication provided the maximum channel power is not exceeded and provided a sufficient reserve power is available to admit at least one additional voice communication.
22. The wireless communication system of claim 19 , wherein the call admission monitor further comprises a scheduler configured to schedule channel resources for burst requests originating from data communications that are transitioning from dormant to active.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
May 30, 2000
December 13, 2005
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